@vuemap/vue-amap-extra/es/packages/ThreePassCircle/ThreePassCircle.mjs

@vuemap/vue-amap扩展库，包含threejs相关图层

import { Vector3 } from 'three';
import { CircleSweepPass } from './CircleSweepPass.mjs';

var __defProp = Object.defineProperty;
var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value;
var __publicField = (obj, key, value) => {
  __defNormalProp(obj, typeof key !== "symbol" ? key + "" : key, value);
  return value;
};
class ThreePassCircle {
  constructor(layer, options) {
    __publicField(this, "object");
    // Light
    __publicField(this, "layer");
    // threejs的图层对象
    __publicField(this, "shaderMaterial");
    __publicField(this, "frame", -1);
    __publicField(this, "maxRadius");
    this.maxRadius = options.maxRadius;
    this.layer = layer;
    const center = this.layer.convertLngLat(options.position);
    const vp = new Vector3(center[0], center[1], 0);
    const shaderPass = new CircleSweepPass(this.layer.getRender(), this.layer.getScene(), this.layer.getCamera(), {
      center: vp,
      innerRadius: 0,
      outerRadius: 10
    });
    this.object = shaderPass;
    this.layer.addPass(shaderPass);
    this.start();
  }
  start() {
    if (this.object.depthMaterial.uniforms.innerRadius.value > 100) {
      this.object.depthMaterial.uniforms.innerRadius.value = 0;
      this.object.depthMaterial.uniforms.outerRadius.value = 10;
    }
    this.object.depthMaterial.uniforms.innerRadius.value += 0.4;
    this.object.depthMaterial.uniforms.outerRadius.value += 0.4;
    this.refresh();
    this.frame = requestAnimationFrame(() => {
      this.start();
    });
  }
  stop() {
    cancelAnimationFrame(this.frame);
  }
  refresh() {
    this.layer.update();
  }
  remove() {
    if (this.object) {
      this.layer.removePass(this.object);
    }
  }
  destroy() {
    this.stop();
    if (this.object) {
      if (this.object.dispose) {
        this.object.dispose();
      }
      this.object = null;
      this.layer = null;
    }
  }
}

export { ThreePassCircle as default };
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